Locomotive front end



1928. H. B. OATLEY LOCOMOTIVE FRONT END Filed octlla, 1925 s Sheets-Sheet HE/VF). .5. OAKLEY 1 N VEN TOR.

BY I

ATTORNEY.

July 10, 1928.

H. B. OATLEY LOCOMOTIVE FRONT ENL- Filed Oct. 19, .1925 a, iS heets sheei; 2

HE/VEXB. 0/1715 Y INVENTOR.

ATTORNEY.

July 10, 1928.

- v H. B. OATLEY LOCOMOTIVE FRONT EN-D Filed 001:. 19} 1925 a Sheets-Sheet 5 /-//W?K3 0472a Y INVENTOR.

ATTORNEY.

Patented July 10,

I-YIELIRYVB. centres-or FLUSHING, NE YonK; asstenoie..To'rnrijsin n nnnnrnncont a renxornnwyonx,n-Y. j

LO COMO' IIVE Fnon'r m).

1' Application filed October 1e,'19a5. seriei=:1vo 63,565. I

-.;Thi s. invention relates .to locomotives and has for its purpose the provision of anim proved arrangement front-end. '2

for the qsrnokebox or The improvement is illustrated inthe accompanying drawings. In these "Fig. 1 is zaicentral longitudinal section ofthe front end of a locomotive according to my improved arrangement. Fig.2 is a section on line 2,2 of Fig l. Fig. 3 is;a halt section online .3,'3 of Fig. 1, Fig. t, is a tragmentary View on line 14 otFig. 1;[Fig. 5 israview similar to Fig. l of a modifica tion; Fig. 6 isa front view of this modifi- ;cation .with a portion shown asa section on line 6- 6otFig. 5.

I shall first describe the form of niy ;vention -shojvn in Figsl to 4. i The locomo ti'v -i onne i n i hwhich I describe my invention in these figures for illustrative purposes isonejof a standard typeequipped with the -usualsuperheater. Thebarrelof lthe locomotiveqis indicated at 1,- the steam -=dome being designated by the referencenumeral2. Fromthe front flue sheet?) extend back vardtheflues 4. YVithin these fines are located. the H tubularsuperheater; elements 5 Whichhave their ends connected to the head 1 e116. 7 g 7 All ofgthisisof a usual ell knovvnconstructjion. v 7 V j "The smokebox sheet 7'vvhich in the'ordinary'arrangement is' cylindrical sheet is in my "construction cut away at the front upper portion so that thereare two straight .upperedges 8- 8 andan arc -shaped edge 9.

flat; sheet :10 extends between the edges 88,,ancl from its rear end 11 a segment shaped Vertical p late l2extends up tothe and secured to it by means of the flange 15. i

.pso itcan read1ly-be1nserted and removed.

.The usual petticoat pipe 17 and exhaust base; 18 create the draft to send the gases "from fines 4 out through the stack. I

Mounted also above theflat sheetlO is the throttle 19. Thisrthrottle is connected to the superheater header by means of the pipe V20 which is preferably integral with the :throttle. Theconnectionbetween the superheater outlet 21 and the'pipe 20 1s efiected :per side of-the h ineans of theflanges 22 and 23iwhich it Wlll be.=observed,.lie forward or the vertical sheet-121 Thethrottle lghas areadily removable. cover 19 to make'the interior of Steam is brought from the steam dome Z to; the-inletQ-i of the superheatenheader p 7 means of a pipe25. The joint26 between thesetWo. liesoutside of-the slnokebox sheet,

eXtendsathroughI-fan-operiing 24 in the smokehox sheet,7.. The sheet 24, extending trom'sheeflito the flange 24, makesan eirtight closure for the. opening- 241:? .soxthat ingress of air tothe .smokebox zorf egress of gases from 1 it. through' this opening. is pre 'ventedf g v e is ashutoif valve Whereby steamcan be c 7 27 shut off directly at rom thethrottle 19 extend downward thetwo. steam. pipes, 2828. These are shown to lie in depressions 29f29" Of'llllf) the steam domeif ne'ccs- Y For this purposethe inlet connection 2-4; .7 t

smokebox sheet althoughthis featureis not A essential. It..,willybe notedxthat'the joints 130.30. between the ste21m pipes28+28 the throttle 19 lie above: tliesheetlO; 1

I The superheater elements .15. are secured to eader and are readily accessible. 1 5

To-close in the throttle and protect it .thecheader 6: by meansv of bolts and nuts. l .The nuts BI-itwvill bewnote'd are on the upfrom .the weather the curved sheet 32 is used.

This is preferably split lengthwise at the top as will be. apparent from ail-inspection so asto enclose atthis end. the

space in i as. at. .33

ofFigJ 4 so,tllatitr is readilyremovable. ;The front, sheet 13 is madeltoLeXtendclear :to. the top of the frontend otthesmokebox I jiuo Y I Theprincipaladvantages.of the improved .;t1'ont. end arrangement,as'above described are that allot the: large steam pipe joints lUS lielentirely outside-ofthe smokebox; that. a'

flat surface :is. provided fo'rysecuring the through the smokebox. s

duced; that the nuts which must be set up to tighteothe joint between the, superheater elements and the supheater header are more readily accessible; that the throttle is more accessible for repairs and adjustment, and

that the main steam pipes are more acces sible for application and replacement.

One of the sources of annoyance 1n locomotive work is the leaky joints in the inain and in case a slight leakage should occur the partial vacuum in the smokebox is not mterfered-with. This is a very decided improvement as will be readily appreciated by those familiar with this art.

The difiiculty'of making a tight joint between the flange ofthe locomotive stack and the ordinary curved smokebox shell is well known to railroad men. There is no ready way'of machining the flange to a fit and chipping has to be resorted to. This joint has always been a source of petty annoyance. lVith a fiat sheet such as provided with my improved construction the lowerside of the flange can be readily'machined and it becomes an easy matter to make a tight joint at this point. 7

By cutting out the upper portions of the smokebox as I do I reduce the total volume ofthe smokebox contents.- This will result in less eddying of the gases and in a somewhat greater uniformity of their velocity The tightening of the nuts 31 of the superheater bolts which has been referred to above is easier with this arrangement than it has been heretofore.

The throttle is no less readily accessible than in the ordinary arrangement and can be repaired and reground directly from the outside without the necessity of removing any sheets or covers except the throttle cover itself. Moreover, the entire throttle can be removed and replaced without breaking any air joint.

The principal difference between the modification shown in Figs. 5 and 6, and the form trated in this modification a feedwater heater which issupplied with exhaust steam from the main engine by means of the pipe 51. This feed water heater forms no part of the present invention, and need not therefore be described in any detail. Its location on the flat sheet 10, however, is a Very convenient one, and is made possible by my improvement.

The flat sheet 10 has a perforation 52 over which is situated the superheater header 6. This header, which is of a well-known and widely used form, has slots through it to accommodate the bolts on which the nuts 31- 31 are threaded. In order to close these openings and so to prevent the flow of air into the sinokebox and the flow of waste gases outward from the smokebox, the plate 53 is placed on the header below the nuts Ell-31.

The end of the plate 10, which lies adjaccnt'to the flue sheet 3, forms an airtight joint at this point by being bolted or riveted to the angle 54. 3 It will be understood that the two forms of my invention herein described are illustrative only, and that they may be somewhat varied without sacrificing the inventive idea.

What I claim is: v

1. In a locomotive, the, combination of a circular frontflue sheet; a generally cylindrical sniokeb ox sheet extending forward from it and having its forward upper portion cutaway leaving two horizontal edges; a fiat sheet extending between said edges; and closure means engaging the front edges of the ilat sheet and of the smokebox sheet.

I 2. In a locomotive, the combination of a circular front fiue sheet; a generally cylindrical 'smokebox sheet extending forward from it and having its forward upper portion cut away leaving two horizontal edges; a fiat sheet extending between said edges; a

stack extending through and secured to the flat sheet; and closure means engaging the front edges of the flat sheet and of the smokebox sheet.

3. In a locomotive, the combination of a circular frontflue sheet; a generally cylindrical sinokebox sheet extending forward from it and having its forward upper portion cut away leaving two horizontal edges; a flat sheet extending between said edges; a stack extending through and secured to the flat sheet; closure means engaging the front edges of the flat sheet'and of the smokebox sheet; flu'es extending back from the flue sheet; a superheater header forward from and above the flues; superheater elements secured to the header and extending into the fines; a throttle located above the flat sheet; a pipe connected to the header and carrying steam to it; a connection carrying steam from the header to the throttle; pipe connections carrying steam away from the throttle; the-joints of all said connections lying outside of the smokebox.

circular front'flue sheet; a generally cylindrical smokebox sheet extending forward from it, and having its upper portion cut away substantiallyto the flue sheet leaving two horizontal edges; a flat sheet extending between said edges; closure means engaging the front edges of the flat sheet and of the smokebox sheet; there being an opening in the flat sheet near the fluesheet; and a superheater header closing said opening.

5. In a locomotive the combinationof circular front fl closing said ope I lie sheet asmoke box sheet extending forward fromit, said snioke'box sheet being cylindrical exceptthatits top is fiat from the flue sheet to the'front end closure means engaging the front edge of vthe smoke box sheet, there being 'an opening in the fiat portion of the smoke box sheet near the flue she et; and a superheater header 20 I ning.

HENRY B. OATLEY. 

